irc/connection/MotdHandler.java

   1 package net.pterodactylus.irc.connection;
   2
   3 import static java.util.Arrays.asList;
   4
   5 import java.util.List;
   6
   7 import net.pterodactylus.irc.Connection;
   8 import net.pterodactylus.irc.Reply;
   9 import net.pterodactylus.irc.event.MotdReceived;
  10
  11 import com.google.common.eventbus.EventBus;
  12
  13 /**
  14  * Handles the MOTD sent by the server.
  15  *
  16  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  17  * @see MotdReceived
  18  */
  19 public class MotdHandler implements Handler {
  20
  21         private static final List<String> COMMANDS = asList("372", "375", "376");
  22         private final EventBus eventBus;
  23         private final Connection connection;
  24         private final StringBuilder motd = new StringBuilder();
  25
  26         public MotdHandler(EventBus eventBus, Connection connection) {
  27                 this.eventBus = eventBus;
  28                 this.connection = connection;
  29         }
  30
  31         @Override
  32         public boolean willHandle(Reply reply) {
  33                 return COMMANDS.contains(reply.command());
  34         }
  35
  36         @Override
  37         public void handleReply(Reply reply) {
  38                 String command = reply.command();
  39                 List<String> parameters = reply.parameters();
  40
  41                 /* 375, 372, and 376 handle the server’s MOTD. */
  42                 if (command.equals("375")) {
  43                         /* MOTD starts. */
  44                         motd.append(parameters.get(1)).append('\n');
  45                 } else if (command.equals("372")) {
  46                         motd.append(parameters.get(1)).append('\n');
  47                 } else if (command.equals("376")) {
  48                         motd.append(parameters.get(1)).append('\n');
  49                         eventBus.post(new MotdReceived(connection, motd.toString()));
  50                         motd.setLength(0);
  51                 }
  52         }
  53
  54 }